S-91113A040 1.275" ID x 1.975" OD ASME B18.21.1 Internal-Tooth Lock Washers
Internal-Tooth Lock Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through internal teeth design that maintains secure fastening under extreme conditions
- Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh environments
- Consistent locking performance with Rockwell C44 hardness ensuring reliable torque retention
- Precision dimensional control with 1.275" ID specifically engineered for 1 1/4" screw applications
- Industry-standard compliance meeting ASME B18.21.1 specifications for guaranteed quality and interchangeability
- Environmental responsibility through RoHS 3 and REACH compliance for safe industrial usage
- Optimized tooth engagement with internal tooth location providing maximum surface contact and locking force
Professional Applications & Engineering Value
This tooth lock washer delivers critical vibration-resistant performance in demanding industrial applications where fastener security is paramount. The internal tooth configuration creates multiple biting points that dig into both the bearing surface and fastener head, preventing rotational loosening caused by machinery vibration, thermal cycling, or dynamic loads. Manufactured from zinc-plated steel, these washers provide excellent corrosion resistance while maintaining the structural integrity needed for heavy-duty assemblies. The precise 1.275" internal diameter ensures perfect compatibility with 1 1/4" fasteners in construction equipment, industrial machinery, transportation systems, and manufacturing applications where reliable locking action cannot be compromised.
Specification Summary & Compliance
This tooth lock washer features a 1.275" internal diameter, 1.975" outer diameter, and thickness range of 0.059-0.067" for consistent performance. Manufactured to ASME B18.21.1 standards with internal tooth location, it ensures dimensional accuracy and reliable locking action. The washer maintains Rockwell C44 hardness for optimal strength and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements for environmental safety and regulatory adherence in industrial applications.
